“…The complexity and dynamics of tennis determine that player's game strategy and technicaltactical performance are critically influenced by a range of contextual-related constraints (Filipcic, Leskosek, & Filipcic, 2017;Ojala & Häkkinen, 2013;Pereira et al, 2018). The available research already evidenced that those constraints might be originated from the differences of match location (O'Donoghue & Ingram, 2001), players' qualities (Cui, Gómez, Gonçalves, Liu, & Sampaio, 2017) and weather condition of which players were conscious prior to a match (Morante & Brotherhood, 2007); and from the uncertainty of opponent's actual tactics (Ma et al, 2013), match score-line (O'Donoghue, 2012), spatial-temporal relationship among players and ball (Carvalho et al, 2013;Martinez-Gallego et al, 2013), physiological fatigue (Gomes et al, 2011;Reid & Duffield, 2014), noise of the audience (Dube & Tatz, 1991) and even the line-calling bias from referees that occurred within the match (Carboch et al, 2016). Therefore, adjusting to the constant change of those constraints and making correspondent tactical decisions should be an essential attribute reinforced in the development of professional tennis players (Murray & Hunfalvay, 2017;Triolet, Benguigui, Le Runigo, & Williams, 2013).…”